salomon heimanx



EXAMINER COATING 0R PIZASTC. bross b p 106. COMPOSlTlONS I Patented May 14, 1889.

, s. HEIMANN. v INSULATED WIRE.

'- (lip Model.)

WI THE 885 8 srnorrrca'rron forming part of Letters Patent No. 403,267, dated m 11, 1889.

' Application filed larch 27, 1889.

T all whom it may concern:

, Be it known that 1, SALOMON Harman's, of the city of NewYork, in the county and State of New York, a citizen of Germany, have invented certain new and usef..lnprovements in Insulated \Vires, of which he following is a specification.

This invention relates to an improved insulated wire for electric purposes, which wire 5 irallv around the wires, sex I to is covered with fire and water proof covering i-Een coated with iii-solution, f,0f ut-taercha 5o w ich'ag'a'n that forms at the same time a superior insu- Qlator; and the invention consists of an insulated electric wire, which is first covered with cotton thread and with a mixture of soluble x 5 glass and glycerine and next with a mixture of pulverized plumbago and pumice-stone, which layer is then covered by a protective covering formed of a layer of rubber cloth, a rubber pipe, and a suitable hose, so as to form a cable.

The accompanying drawing represents a I side elevation of my improved insulated electric wire, showing the different successive layers of the same.

5 In carrying out my invention an electric wire, a, of co er or other suitable metal, is first covered in the usual manner withalayer .of cotton thread b, which is then coatedwith ame hundred parts of soluble 0 glass and five to ten parts of glvcer'mef'tiie g ycer ne serving to impart the rm degree of flexibility to the soluble glass. A layer, 11, formed of a mixture of one hundred parts of ulverized umice-stone with from ten to fiffin parE oi ulverized lumba o,

is either sprinkled over the molst coaiing of soluble glass or formed by the addition of water into a paste and applied over the dry coating-of soluble glass,'after which another 4o layer of soluble glass and another layer of Berislllo. 904,996- (No model.)

paste maybe applied, according to the thickness that is to be given to the insulated covering of the electric wire.

This insulated electricwire c." be used for any purpose in which electric conductingwires have been ne d heretofore. In case a number of these wires are to be collected in a cable a layer, e, of rubber cloth. is wound ayer mug in bisul hide of carbon over s lral [aver .ol ruBBer cloth is applied, then l an outer pro- By covering the wire in the manner described a good fire and water proof covering is given to the same, which forms also a very effective insulating material for the same, so that no loss of current or danger from fire by the heating of the wire can take place.

Having thus described my invention,l claim as new and desire to secure by Letters Pat ent- 1. An insulated wire composed of an electric wire, a layer of cotton thread on the '65 same,a coating of soluble glass and glycerine, and a. layer formed "of pulverized pumice- ;ton; and plumbago, substantially as set ort composed of soluble glass and glycerine and a coating of pulverized pumice-stone and plumbago, substantially as set forth.

In testimony that I claim the foregoing as my invention 1 have signed my name in pres= 75 once of two subscribing witnesses.

: SALOMON HEIMANN. ..,-Witnesses: p

M. GoLnsrEm, f CARL KARI.

2. An insulating-covering for electric wires,

the application of Salomon Heimann, of New York, .HQYg for enjimprovement in 7 Insulated Wires, were erroneously issued to said Her h and Frank L. Pommer 6 as owners of the entire interest in said invention; that said Letters Patent should have been issued to said Heimann and said Pommer, William Meyer and Henry Osborne, Q of New York, N. Y., and Johann Steneok, of Hoboken, New Jersey, said Meyer, Osborne, and Steneck being assignees of one-twentieth each of said invention es shown by 2 assignments of record in this oflice; and that said I etters Patent should be read I g with this correction therein that the same may conform to the recordof the case in the f Patent-Office. r

Signed, countersigned, and sealed this 4th day of June, A. D. 1889. 1 [SEAL.] CYRUS BUSSEY, 1 2: I Assistant secretary of the Interior.

8 Countersigned: g 0. E. MrrclrnnL, 5 I L) Gommwswner of Pamtg "Inn? 4' o Correctionin Letters Patent No. 403,267.-

and Steneck being assignees It is hereby -certified that Letters Patent No. 403,267, granted May 14, 1889, upon the application of Salomon Heimann, of New York, N. Y., for an improvement in Insulated Wires, were erroneously issued to said Heimann and Frank L. Pommer as owners of the entire interest in said invention; that said Letters Patent should have been issued to said Heimann and said Pommer, William Meyer and Henry Osborne, of New York, N. Y., and Johann Steneok, of Hoboken, New Jersey, said Meyer, Osborne, of one-twentieth each of said invention as shown by assignments of record in this office; and that said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the latent Office. I I

Signed, countersigned, and sealed this 4th day of J Line, A. D. 1889.

CYRUS BUSSEY, Assistant Secretary of the Interior.

[sEAn] Go'untersigned (J. E. MITCHELL, I

Commissioner of Patents. 

